Restock - Phosphor Bronze String, Round Thread, 039 Dunlop acoustic sets...
Restocking by 12 pieces - Lifespan SP 80/20 unit rope .039
Restocking by 12 pieces - Lifespan SP 92/8 unit rope .039
Restocking by 12 pieces - SP 80/20 unit rope .056
Restocking by 12 pieces - SP 80/20 unit rope .039
Restocking by 12 pieces - SP 92/8 unit rope .039
Restocking by 4 pieces - Yarn 039
Restocking by 4 pieces - Yarn 039
Restocking by 4 pieces - Yarn 039
You may want to say ".039 draw" instead of ".39 draw", as the former is a common measurement for guitar strings, while the latter would be much thicker and less common.
In any case, the "draw" of a guitar string refers to the thickness of the string and the force needed to tension it to the right height. Guitar strings for acoustic "folk" guitars are usually measured in millimeters, and the draw is indicated by a numerical value that represents the diameter of the string.
So if you bought a folk guitar string with a draw of .039, that means the string is .039 inches in diameter, or about .99 mm. Strings with a higher draw are generally thicker and tighter, producing a louder, more powerful sound, while strings with a lower draw are thinner and easier to play, but can lack volume and projection.